How do you win an argument with someone who will never admit they are wrong?

The donkey says to the tiger: "The grass is blue".

The tiger replied: "No, the grass is green".

The discussion turned heated and the two decided to bring the issue to the lion, the king of the jungle.

Before reaching the forest glade where the lion was seated on his throne, the donkey began to bray: "Your Highness, is it true that the grass is blue?".

The lion replied: "It is true, the grass is blue".

The donkey rushed forward and continued: "The tiger does not agree with me and contradicts me and annoys me please punish him".

The king then declared: "The tiger will be punished by 5 years of silence".

The donkey jumped for joy and continued on his way, happy and repeating: "The grass is blue" ...

The tiger accepted his punishment, but he asked the lion, "Your Majesty, why have you punished me, after all the grass is green?"

The lion replied: "Actually, the grass is green".

The tiger asked, "So why are you punishing me?"

The lion replied, “The punishment has nothing to do with whether the grass is blue or green. The punishment is because you, a brave and intelligent creature, waste time arguing with a donkey, then come bother me with a silly question. "